... 4.4 Input / 2 Output / USB GSM Security Alarm System with sms intelligent controllerto switch on/off home ... The GSM SMS Controller-Alarm suitable for below applications:Security Alarm System applications; Supervision and monitoring alarm systems;Automatic monitoring system; Vending ... Sensor, Oil Overflow Level Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, ...